Updating CC beds to work under top bunks

I have a couple separated mattress recolors I made last year that I'd like to be able to use in bunk beds. What do I need to add in order to make them slot under the top bunk properly? It doesn't look like the couple of CC beds that do actually work in bunks have unique tuning (they reference the same EA tunings as usual) or tags, so I'm not sure what I need to modify. I've only done recolors and a couple tuning tweaks before, nothing that involved mesh or slot editing.

Edit: I tried using Selective Clone with "Use 32-bit instances" checked, but that doesn't seem to have done it on its own- it still won't slot under a top bunk (or place at all under the EA top bunks.)

Edit 2: Found it! The "SlotTypeSet" line in the object catalog entry needs to be changed.

951FCCE89B8976E4 for single beds, EF89266AC1910E3F for double beds, and 524683C0B714095C for toddler beds.

Also it matters whether you renumber or not- I initially unchecked it so I wouldn't have to re-buy any beds, but when I did that, it would slot but sims were unable to use it. Go figure.